PI. cell. aph. 4. CENOTHALAMEiE. 118. Spiloma. 481 
4. Spiloma microclonium. Fine-branched spotted-moss. 
Crust very thin, greenish ; apothecia bursting forth, small, 
convex, crowded and confluent, slightly branched, deep 
black. 
Spiloma microclonium, Achar. Meth. Suppl. 5 ; Engl. Bot. 2150. 
On old wood. 
5. Spiloma microscopicum. Microscopic spotted-moss . 
Crust spreading, very thin, membranaceous, greyish ; 
apothecia very minute, dotlike, black, lead-colour when 
dry. 
Spiloma microscopium, Turner and Burrer in Engl . Bot. 2396. 
On timber-work exposed to the air. 
Thallus scarcely conspicuous, except by the bluish co- 
lour it gives to the wood ; apothecia only discernible by a 
powerful microscope, yet stain the fingers black. 
6. Spiloma dispersum. Scattered spotted-moss. 
Crust very thin, film-like, greenish grey; apothecia dis- 
persed, hemispherical, sooty, internally yellowish-green. 
Spiloma dispersuni, Turner and Borrer in Engl. Bot. 2398. 
On old rails, like a greenish stain. 
7. Spiloma decolorans. Staining spotted-moss. 
Crust spreading, very thin, membranaceous, greyish 
white, when rubbed yellowish-green ; apothecia minute, 
flat, confluent, purplish-grey. 
Spiloma decolorans, Turner and Borrer in Engl ■ Bot. 2,399. 
On the bark of oak, on boarded buildings and pales. 
8. Spiloma punclatum. Dotted spotted-moss. 
Crust thin, rather powdery, white; apothecia scattered, 
minute, dotlike, solid, black, with dark-brown hoar. 
Spiloma punctatum, Turner and Borrer in Engl. Bot. 2472. 
On old oaks. 
G. Calicidl®. Thallus crustlike or very thin, uni- 
form; apothecia cupshape, bordered, podicilled, including 
a naked powdery mass forming a flat or convex centre, ra- 
ther solid internally; sporidia very crowded, among the 
powdery mass, accompanied with many twin vesicles, or 
scattered, nestling in the consolidated parenchyme of the 
swollen centre. — Differ from protomycese by the presence of 
a thallus and apothecia ; in very young plants the apothecia 
are covered with a membrane which soon disappears. 
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